Telephone handset housing panel



FIG. 1 is a top, front and left side perspective view thereof;

FIG. 2 is a right side elevation view; and,

FIG. 3 is a rear elevation view thereof.

The broken line showing in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a telephone handset housing panel, as shown and described. 